Planoqraph co



E. JACKSON.

MANUALLY OPERATED COAL MINING MACHINE.

APPLICATION FILED APR.4| 916. 1,309,477. Patented July 8, 1919.

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E. JACKSON.

MANUALLY OPERATED COAL M!NING MACHINE. APPLICATION FILED APR.4. I916.

1 09,477. Patented July 8, 1919.

4 SHEETS-'SHEET 2.

V AVA Wihwoow m8 COLUMBIA PLANOORAP" C0-, WASHINGTON. n. c.

E.'JACKSO.N.

MANUALLY OPERATED COAL MINING MACHINE.

APPLICATION FILED APR.4.19I6.

1 309,477. Patented July 8, 1919.

4 SHEETS-SHEET 3.

E. JACKSON.

MANUALLY OPERATED COAL MINING MACHINE.

APPLICATION FILED mm. 1916.

1 309,477 Patented July 8, 1919.

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ED JACKSON, 0]? THURIBER, TEXAS.

MANUAIJLY-OPERATED- COAL-MINING- MACH'INEL Specifieation'of Letters Patent,

*atented July 8', 1919.

ApplieationfiIedApril-4, 1915.. Serial Noi 883819;

To all whom it may concern:

Be it known that I, En Jnonson, a citizen of the U nited States, residing at Thurber, in the county of Erath, and State of Texas, have invented certain new and useful Improvements in Manually-Operated Coal- Mining Machines; and I do hereby declare the following to be a full, clear and; exact description of the invention, such as will: enable others skilled in the art to which it appertains to make and use the same-..

The invention relates to coal mining machines.

The object of the present invention isv to improvethe construction of' coal; mining machines and to provide a simple,. practical and efiicient coal. mining machine adapted to be manually operated and capable of enabling a miner to mine a much greater amount of coal in considerably less time and: with less labor than is possible with an ordinary hand pick.

A further object of the invention is to provide a, manually operated; mining machine ofthis character adapted to be operated with the miner in anupright; positionand capable of cutting coal close to they bottom of the floor of the tunnel or other place where the coal is being mined, thereby obviating the necessity of a miner lyinguponcold wet surfaces and using a pick.

ith these and other objects in view the invention consists. in the construction and novel combination and arrangement oil parts hereinafter fully described, illustrated in the accompanying drawings and pointed out'i-n the claims heretoappended, it being uneleustood that various ehaugesim the form, pro.- portion and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advan tages of the invention.

In the drawings.

Figure 1 is a plan view of a. manually operable mining machine'constructed in. accordance with this invention,

Fig. 2 is a vertical longitudinal sectional view of the same,

Fig, 3 is a sideelevation of thelower portion ot the mining machine,

Fig. t is an end elevation of the mining machine,

Fig. 5 is a! detail vertical sectional view illustrating the construction of the gearing of the feed mechanism and the means for throwing the feeding mechanism out of operation,

Fig. (i is. anenlargcd detail sectional view through thehorizontal cutting wheel.

Fig-,7? is a detail sectional: view, illustrating the manner of mounting the lower end of the vertical shaft,

Fig. 8 is a. horizontal sectional view through the lower portion of the stand illust at-ing; the arrangement of the guides-of thev feeding chain,

Fig. 9 is a detail; view of the pulley of the crank shaft for opeating the flexible connection for returning the oscillatory arm to its initiat position Fig. 10- is: a detail view of air adjusting device for forming an extension of the top screw.

Like numerals of reference designate corresponding parts in. the several figures ofthe drawings.

In the accompanying drawings inwhich is illustrated thepreferred embodiment of the invention, the machine comprises in its constructiomv a stand- 01: frameconsisting of a base 1,. spaced vertical sides 2 and 3i, and a connecting top portion 4 the base and} top portion being designedl to; be. provided with suitable screws 5 and (3- by means of which the frame isfirmLy anchored in a tunnel and while a. single screw is shown at the top and bottomof, the fnaane,.-a=ny number may of course be employed; forthispurpose. and the frame may be constructed ot' any-suitable material; to secure the desired strength and stability without rendering the machine excessively heavy for one man to handle in moving it from one place or point to another. The base is provided at its rear portion, with a suitable handle- I to enable it to be conveniently dragged along when it is necessary tomove the machine.

The base oii the machineis rounded at the left front corner at St and; it has pivotally mounted on1 it a.- horizontallly oscillatory arm- 9 extending forwardly from the front of the base and pivoted at its rear end by a sleeve 10 which is also adapted to form a bearing for the lower end 11 of a vertical shaft 12. The arm 9 which extends forwardly from the front of the base is adapted to swing horizontally from the frontcentral position to the left hand side of the base to carry a horizontally disposed rotary cutting wheel 13 through the coal to be mined and the said oscillatory arm is preferably composed of upper and lower sections 14 and 15 which are angularly'bent as shown tolclear the wheel and also to arrange their rear portions consists of a rim 18 and radial spokes 19 which are preferably formed integral with a hub 20. The rim 13 is provided with perforations 21 for the reception of shanks 22 of picks :23 extending outwardly from the periphery of the wheel and curved slightly in the direction of the rotation of the same and adapted to cut into the coal in a manner similar to an ordinary pick. 2-2 are threaded for the reception of nuts 24 and the picks which are adapted to be readily removed to enable them to be conveniently sharpened and pointed are arranged to euta kerf of sufficient width or size to enable the wheel to rotate within 7 the same without binding against the walls thereof. The picks'or cutters are shown arranged in three rows in' staggered relation but they may be arranged in any other de sired manner as will be readily understood,

and cutters of various'shapes and sizes may of coursebe employed. The rotary cuttlng wheel which is preferably supported by a ball bearing 25 is equipped at its upper face with a sprocketwheel-QG suitably fixed to the cutting wheel and meshing with a sprocket chain 27 of any preferred construction extending from the front sprocket wheel 26 to a rearsprocket wheel 28 that is mounted on the lower portion of the 'up-' right shaft 12.- The'sides or flights of the sprocket chain are guided by front and rear pulleys29 and 30 arranged in pairs, the chain passing beneath the front pulleys and over the rear pulleys but any other suitable arrangement of guiding means may be employed and other forms of gearing may be The shanks used for transmitting motion from the vertical shaft to the rotary cutting wheel.

The vertical shaft has keyed or otherwise secured to it a horizontal gear wheel 31 having teeth at its lower face meshing with vertical gear wheels or pinions 32 and 33, bevel gears being preferably provided as shown. 'The bevel gear or pinion 32 is mounted on a horizontal crank shaft 34 and the other bevel gear or pinion 33 is mounted on a horizontal shaft 35 arranged in transverse alinement with the shaft 34 and a fly or balance wheel 36. The shafts 34 and 35 are journaled in suitable bearings of the opposite sides of the frame or stand and,

the said shaft 34 is equipped at its outer portion with a pulley 37 and a double crank 38 but any other suitable operating device may of course be provided. The bevel crank enables the crank shaft 34 to be rotated with the use of both the hands of the operator and'the balance wheel 36 which is located at the opposite side of the frame of the machine, assists the operation of thesame and secures a steady uniform motion and at the same time relieves the operator of the jars incident to the cutting operation. The gearing maybe of anydesired diameters to secure the desiredspeed of the rotary cutting wheel which is designedrto be rapidly rotated so that its rapid rotation combined.

with the weight of the wheel and the inom'entum of the fly or balance wheel will enable an easy cutting operation to be effected. The oscillatory arm is provided at the left hand side adjacent to the inner end of the the front endof a feed chain 40 orother suitable flexible connection which extends rearwardly-across a vertical'guide roller41 and over a'horizontal' guide roller 42 and around a rear vertical guide pulley orroller 43 mounted on the rear portion of the base. The feed chain extends forwardly from the V fender with a bail 39 to which is connected rear vertical guide pulley or roller 43 to a horizontal shaft 44 extending across the frame of the machine and constituting a drum or Windlass around which the feed chain is wound during the cutting opera-j '1 tion of the machine to swingthe cutting wheel laterally and advance the same into the coal from the full 'line position illustratedin Fig. 1 of the drawings tothe dotted line position shown in'the said figure.

The horizontalwinding shaft of the feed-. ing mechanism is intermittently rotated by gearing comprising combined gear and ratchet wheels 45 and 46 mounted respeeti'vely' on the winding shaft and ona stub shaft 147. The gear wheel 46 which is lo' cated above the gear wheel 45' is actuated by a pawl or dog 48 which is connected with the strap 49 of'an eccentric 50. The actuating pawl or dog 48 which is arranged at an inclination is located above the ratchet wheel. and while it is maintained in engagement with the combined ratchet and gear wheel 46 by gravity, a spring may be. em.- ployed if desired? and in the downwardly or rearward movement of the pawl or dog, it advances the wheel 46 the distance of one tooth, the feeding mechanism. being held against retrograde movement by a check pawl 51 located: in rear of the: lower com.-

bined gear and ratchet wheel 45 extending upwardly from a pivot and having an engaging upper end or tooth and maintained in engagement with the said wheel 45 by a coiled spring 53. When it is desired to throw the feed mechanism out of operation to return the cutting wheel to its initial position, this result is accomplished by mechanism comprising a lever 54: fulcrumed at 55 on one side of the frame and pivoted at its lower end at 56 to the lower end of an in clined link 57 which is connected at its upper end at 58 to one end of a bell crank lever 59. The bell crank lever is fulcrumed at its angle at 60 and one of its arms extends downwardly and forwardly from the pivot and its other arm extends rearwardly to a point beneath the lower portion of the actuating pawl or dog 48. The operating lever 51- extends in advance of the engaging portion or upper end of the check pawl 51 and when the operating lever is actuated to swing its lower arm rearwardly, it carries the check pawl out of engagement with the lower wheel 45 and moves the rearwardly extending arm of the bell crank lever upwardly to lift the actuating pawl out of engagement with the wheel 46. The parts are adapted to be locked in this position by a catch consisting of a hook 61 pivotally mounted on the adjacent side of the frame of the machine and adapted to swing into and out of engagement with the upper arm of the operating lever. This will prevent the bell crank lever from returning to its normal position and will hold the operating lever in position for maintaining the check pawl out of engagement. As soon as the catch is disengaged from the operating lever the pawls will return to their engaging positions. The cutting wheel is returned to its initial position by a chain 62 connected at its front end with the oscillatory arm and guided by pulleys 63 and 64- and extending to the pulley 37 of the crank shaft. The pulley 37 of the crank shaft is provided with a socket 65 and the crank shaft is adapted to be rotated to wind the right hand chain around the pulley 37 which is grooved at its periphery to receive the said chain. This will enable the oscillatory arm and the cutting wheel to be quickly returned to their initial positions. In Fig. 10 of the drawing is illustrated an adjusting device to form an extension of the screw 5. The extension device consists of male and female telescopic sections 66 and 67 and a set screw 68. The tubular or female member carries an en gaging point 69 at its outer end and the rod or male member (36 provided in its inner end with a socketv or recess to. be engaged by the screw 5r What i'sclaimetl is 1. A mining machine of the class described including a frame, a pivotal l-y mounted liorizontally movable arm extending from the frame, a rotary cutting wheel carried by the arm, gearing for rotating the cutting wheel, a winding shaft having a flexible connection connected with the arm for moving the same laterally to feed the wheel, a pair of combined gears and ratchet wheels, one of the said wheels being mounted on the winding shaft, a check pawl engaging such wheel, an eccentric operated by the gearing for actuating the cutting wheel and having a strap and an actuating pawl or dog connected with the eccentric strap and arranged to engage and actuate the other combined gear and ratchet wheel for intern'iittently rotating the winding shaft, a bell crank having one arm arranged to lift the actuating pawl out of engagement, an operating lever arranged to move the check pawl out of engagement and means for connecting the operating lever with the bell crank lever.

A mining machine of the class described including a frame, a pivotally mounted horizontally movable arm extending from the frame, a rotary cutting wheel carried by the arm, gearing for rotating the cutting wheel, a winding shaft having a flexible connection connected with the arm for moving the same laterally to feed the wheel, a pair of combined gears and ratchet wheels, one of the said wheels being mounted on the winding shaft, a check pawl engaging such wheel, an eccentric operated by the gearing for actuating the cutting wheel and having a strap and an actuating pawl or dog connected with the eccentric strap and arranged to engage and actuate the other combined gear and ratchet wheel for intermittently rotating the winding shaft, :1 bell crank having one arm arranged to lift the actuating pawl out of engagement, an operating lever arranged to move the check pawl out of engagement and means for connecting the operating lever with the bell crank lever, and a catch arranged to hold the actuating pawl or dog and the bell crank lever against movement.

3. A mining machine of the class described including a pivotally mounted oscillatory arm, a rotary cutting wheel mounted on the arm and carried by the same, means for rapidly rotating the cutting wheel, feed mechanism connected with the arm and adapted to move the same in one direction to feed the cutting wheel, a power shaft adapted to siin said opposite direction by said returning multanoously operate said means and said means. f I 10 feed mechanism, means adapted to be oper- In testimony whereof I affix my signature ated by said shaft for moving the arm inthe in presence of tWo Witnesses.

opposite direction to return the cutting ED JACKSON.

wheel to its initial position, and means for Witnesses: drsconnectlng sa1d feed mechanism from the -FRED ALLEN, power shaft to perm1t the arm to be moved HERBERT FRUZIER.

Copies of this patent may be obtained for five cents each, by addressing ,the Commissioner of Patents,

-Washington, D. G. 

